.If you have a problem _____ your composition,you had better ask your teacher ______.A.in; on som
题目
.If you have a problem _____ your composition,you had better ask your teacher ______.A.in; on som
If you have a problem _____ your composition,you had better ask your teacher ______.
A.in; on some advice B.for; for some advices C.on; some advice D.with; for some advice
答案
D,advice是不可数名词,不能用复数形式,ask 后面要带介词for,这样就可以用排除法选择了
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
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